diff options
Diffstat (limited to 'oklab.cginc')
| -rw-r--r-- | oklab.cginc | 236 |
1 files changed, 116 insertions, 120 deletions
diff --git a/oklab.cginc b/oklab.cginc index c5f87f6..3c1d3bb 100644 --- a/oklab.cginc +++ b/oklab.cginc @@ -1,120 +1,116 @@ -/*
- * MIT License
- *
- * Copyright (c) 2023-2025 yum_food
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to
- * deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all
- * copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE
- * SOFTWARE.
- */
-
-#ifndef __OKLAB_INC
-#define __OKLAB_INC
-
-#if defined(_EYE_EFFECT_00)
-
-// Utilities relating to the OKLAB color space, as defined here:
-// https://bottosson.github.io/posts/oklab/
-// Code is derived from the samples there, which are in the public domain.
-
-// Weights: https://en.wikipedia.org/wiki/SRGB
-float3 LRGBtoXYZ(float3 c) {
- float3x3 rgb_to_xyz = float3x3(
- 0.4124, 0.3576, 0.1805,
- 0.2126, 0.7152, 0.0722,
- 0.0193, 0.1192, 0.9505);
- return saturate(mul(rgb_to_xyz, c));
-}
-
-// Weights: https://en.wikipedia.org/wiki/SRGB
-float3 XYZtoLRGB(float3 c) {
- float3x3 xyz_to_rgb = float3x3(
- 3.24062548, -1.53720797, -0.4986286,
- -0.96893071, 1.87575606, 0.04151752,
- 0.05571012, -0.20402105, 1.05699594);
- return saturate(mul(xyz_to_rgb, c));
-}
-
-// Source: https://bottosson.github.io/posts/oklab/
-float3 XYZtoOKLAB(float3 c) {
- float3x3 m1 = float3x3(
- 0.8189330101, 0.3618667424, -0.1288597137,
- 0.0329845436, 0.9293118715, 0.0361456387,
- 0.0482003018, 0.2643662691, 0.6338517070);
- float3x3 m2 = float3x3(
- 0.2104542553, 0.7936177850, -0.0040720468,
- 1.9779984951, -2.4285922050, 0.4505937099,
- 0.0259040371, 0.7827717662, -0.8086757660);
- c = mul(m1, c);
- c = pow(c, 0.33333333333);
- return mul(m2, c);
-}
-
-// Source: https://bottosson.github.io/posts/oklab/
-float3 OKLABtoXYZ(float3 c) {
- float3x3 m1i = float3x3(
- 1.22701385, -0.55779998, 0.28125615,
- -0.04058018, 1.11225687, -0.07167668,
- -0.07638128, -0.42148198, 1.58616322);
- float3x3 m2i = float3x3(
- 1.00000000, 0.39633779, 0.21580376,
- 1.00000001, -0.10556134, -0.06385417,
- 1.00000005, -0.08948418, -1.29148554);
- c = mul(m2i, c);
- c = pow(c, 3.0);
- return mul(m1i, c);
-}
-
-// Source: https://bottosson.github.io/posts/oklab/
-float3 OKLABtoOKLCH(float3 c) {
- float c_ = length(c.yz);
- float h_ = atan2(c.z, c.y);
- return float3(c.x, c_, h_);
-}
-
-// Source: https://bottosson.github.io/posts/oklab/
-// Note: hue must be in units of radians.
-float3 OKLCHtoOKLAB(float3 c) {
- float a = c.y * cos(c.z);
- float b = c.y * sin(c.z);
- return float3(c.x, a, b);
-}
-
-float3 LRGBtoOKLAB(float3 c) {
- return XYZtoOKLAB(LRGBtoXYZ(c));
-}
-
-float3 OKLABtoLRGB(float3 c) {
- return XYZtoLRGB(OKLABtoXYZ(c));
-}
-
-float3 LRGBtoOKLCH(float3 c) {
- return OKLABtoOKLCH(XYZtoOKLAB(LRGBtoXYZ(c)));
-}
-
-float3 OKLCHtoLRGB(float3 c) {
- return XYZtoLRGB(OKLABtoXYZ(OKLCHtoOKLAB(c)));
-}
-
-#endif // _OKLAB
-
-#endif // __OKLAB_INC
-
+/* + * MIT License + * + * Copyright (c) 2023-2024 yum_food + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE + * SOFTWARE. + */ + +#ifndef __OKLAB_INC +#define __OKLAB_INC + +// Utilities relating to the OKLAB color space, as defined here: +// https://bottosson.github.io/posts/oklab/ +// Code is derived from the samples there, which are in the public domain. + +// Weights: https://en.wikipedia.org/wiki/SRGB +float3 LRGBtoXYZ(float3 c) { + float3x3 rgb_to_xyz = float3x3( + 0.4124, 0.3576, 0.1805, + 0.2126, 0.7152, 0.0722, + 0.0193, 0.1192, 0.9505); + return saturate(mul(rgb_to_xyz, c)); +} + +// Weights: https://en.wikipedia.org/wiki/SRGB +float3 XYZtoLRGB(float3 c) { + float3x3 xyz_to_rgb = float3x3( + 3.24062548, -1.53720797, -0.4986286, + -0.96893071, 1.87575606, 0.04151752, + 0.05571012, -0.20402105, 1.05699594); + return saturate(mul(xyz_to_rgb, c)); +} + +// Source: https://bottosson.github.io/posts/oklab/ +float3 XYZtoOKLAB(float3 c) { + float3x3 m1 = float3x3( + 0.8189330101, 0.3618667424, -0.1288597137, + 0.0329845436, 0.9293118715, 0.0361456387, + 0.0482003018, 0.2643662691, 0.6338517070); + float3x3 m2 = float3x3( + 0.2104542553, 0.7936177850, -0.0040720468, + 1.9779984951, -2.4285922050, 0.4505937099, + 0.0259040371, 0.7827717662, -0.8086757660); + c = mul(m1, c); + c = pow(c, 0.33333333333); + return mul(m2, c); +} + +// Source: https://bottosson.github.io/posts/oklab/ +float3 OKLABtoXYZ(float3 c) { + float3x3 m1i = float3x3( + 1.22701385, -0.55779998, 0.28125615, + -0.04058018, 1.11225687, -0.07167668, + -0.07638128, -0.42148198, 1.58616322); + float3x3 m2i = float3x3( + 1.00000000, 0.39633779, 0.21580376, + 1.00000001, -0.10556134, -0.06385417, + 1.00000005, -0.08948418, -1.29148554); + c = mul(m2i, c); + c = pow(c, 3.0); + return mul(m1i, c); +} + +// Source: https://bottosson.github.io/posts/oklab/ +float3 OKLABtoOKLCH(float3 c) { + float c_ = length(c.yz); + float h_ = atan2(c.z, c.y); + return float3(c.x, c_, h_); +} + +// Source: https://bottosson.github.io/posts/oklab/ +// Note: hue must be in units of radians. +float3 OKLCHtoOKLAB(float3 c) { + float a = c.y * cos(c.z); + float b = c.y * sin(c.z); + return float3(c.x, a, b); +} + +float3 LRGBtoOKLAB(float3 c) { + return XYZtoOKLAB(LRGBtoXYZ(c)); +} + +float3 OKLABtoLRGB(float3 c) { + return XYZtoLRGB(OKLABtoXYZ(c)); +} + +float3 LRGBtoOKLCH(float3 c) { + return OKLABtoOKLCH(XYZtoOKLAB(LRGBtoXYZ(c))); +} + +float3 OKLCHtoLRGB(float3 c) { + return XYZtoLRGB(OKLABtoXYZ(OKLCHtoOKLAB(c))); +} + +#endif // __OKLAB_INC + |